A removal torque and histomorphometric study of commercially pure niobium and titanium implants in rabbit bone

被引:145
作者
Johansson, C. B. [1 ]
Albrektsson, T. [1 ]
机构
[1] Univ Gothenburg, Dept Handicap Res, Biomat Grp, S-41312 Gothenburg, Sweden
关键词
c.p; niobium; titanium; implant; removal torque; histomorphometry;
D O I
10.1034/j.1600-0501.1991.020103.x
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Screw-shaped commercially pure (c.p.) niobium and c.p. titanium implants were inserted in rabbit bone. After a healing period of 3 months, a significantly higher removal torque was demonstrated to unscrew the niobium implants (average 32.9 Ncm) compared to the c.p. titanium implants (average 25.3 Ncm). In the histomorphometric part of the study, there were no significant differences in bone-to-metal contact between the 2 implant materials. An average of 41.1% bony contact was demonstrated for the niobium screws compared to an average 37.2% for the c.p. titanium ones. Our removal torque findings could be related to the differences that we observed between the 2 implant surfaces as indicated by SEM. Since niobium implants showed a more irregular surface topography and niobium is a softer metal than c.p. titanium, this seems the most probable reason for the differences observed in removal torque between the 2 metals. Hypothetically, a more "positive biocompatibility" of the c.p. niobium in comparison the c.p. titanium remains as another possible reason for the observed differences. However, against such a differences in biocompatibility between c.p. niobium and c.p. titanium there is the very similar amount of bony contact registered in the histomorphometric analysis
引用
收藏
页码:24 / 29
页数:6
相关论文
共 10 条
  • [1] ALBREKTSSON T, 1985, Critical Reviews in Biocompatibility, V1, P53
  • [2] CARLSON LV, 1989, THESIS GOTHENBURG U
  • [3] Donath K., 1988, PRAPARATOR, V34, P197
  • [4] GOTTSAUNERWOLF F, 1987, BIOMATERIALS CLIN AP, P753
  • [5] QUALITATIVE INTERFACIAL STUDY BETWEEN BONE AND TANTALUM, NIOBIUM OR COMMERCIALLY PURE TITANIUM
    JOHANSSON, CB
    HANSSON, HA
    ALBREKTSSON, T
    [J]. BIOMATERIALS, 1990, 11 (04) : 277 - 280
  • [6] PERREN SM, 1986, BIOL BIOMECHANICAL P, P397
  • [7] PFLUGER G, 1980, BIOMATERIALS, P45
  • [8] PFLUGER G, 1982, WORLD CMED PHYS BIOM
  • [9] PLENK H, 1984, BIOMATERIALS BIOMECH, P61
  • [10] Semlitsch MF, 1986, BIOL BIOMECHANICAL P, P69